Bump Go version to 1.25.7 throughout project

1.24 is EOL so we should move to 1.25. Bumping the required version in
go.mod also to avoid having to do that later. (We do not want to do it
on release branches.)

Signed-off-by: Lennart Jern <lennart.jern@est.tech>

Author: lentzi90

.golangci.yml

@@ -1,6 +1,6 @@
 version: "2"
 run:
-  go: "1.24"
+  go: "1.25"
   build-tags:
   - e2e
   allow-parallel-runners: true

Dockerfile

@@ -14,7 +14,7 @@
 
 # Build the manager binary
 ARG GO_VERSION
-FROM golang:${GO_VERSION:-1.24.13} AS builder
+FROM golang:${GO_VERSION:-1.25.7} AS builder
 WORKDIR /workspace
 
 # Run this with docker build --build_arg goproxy=$(go env GOPROXY) to override the goproxy

Makefile

@@ -27,7 +27,7 @@ unexport GOPATH
 TRACE ?= 0
 
 # Go
-GO_VERSION ?= 1.24.13
+GO_VERSION ?= 1.25.7
 
 # Directories.
 ARTIFACTS ?= $(REPO_ROOT)/_artifacts

go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/cluster-api-provider-openstack
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc

hack/tools/go.mod

@@ -1,6 +1,6 @@
 module sigs.k8s.io/cluster-api-provider-openstack/hack/tools
 
-go 1.24.0
+go 1.25.0
 
 require (
 	github.com/a8m/envsubst v1.4.3